Earth´s relief

Suitable physical conditions for rocks to melt are:

• An increase in temperature, a decrease in pressure or water entering the rocks.

• A decrease in temperature, a decrease in pressure or water entering the rocks.

• An increase in temperature, an increase in pressure or water leaving the rocks.

• A decrease in temperature, an increase in pressure or water leaving the rocks.

The products expelled by a volcano are:

• Only gases and liquids.

• Liquids and solids.

• Only gases and lava.

• Gases, liquids and solids.

In plastic deformation:

• The material does not change its initial form due to the action of the forces, but is slightly deformed.

• The material changes its initial form due to the action of the forces, but is restored when these forces end.

• The material changes its initial form due to the action of the forces, but is deformed when these forces end.

• The material does not change its initial form.

If a rock exceeds its yield strength when subjected to tectonic stress, it suffers:

• Joints

• Faults

• Joints and Faults

• None of the above

The following waves are produced from the hypocentre:

• Only P and S waves.

• All L waves.

• All kinds of seismic waves.

• Seismic waves are not produced from the hypocentre.

Faults are:

• Fractures of greater length and width than the joints, which do not show displacement of the fractured blocks.

• Fractures of greater length and width than the joints, which show displacement of the fractured blocks.

• Fractures of less extension and width than the joints, which do not show displacement of the fractured blocks.

• They do not resemble joints at all.

The characteristics of granite relief forms are:

• Pavements, domes or tors, crests, boulders or rocks, and weathered granite.

• Domes or tors and weathered granite.

• Domes or tors and boulders or rocks.

• Pavements and boulders or rocks.

Karstic relief is:

• The result of a highly particular type of modelling which takes place almost exclusively in the basaltic rock masses, as a result of the geological action of rainwater which filters underneath the surface to form groundwater.

• The result of a highly particular type of modelling which takes place almost exclusively in the granitic rock masses, as a result of the geological action of rainwater which filters underneath the surface to form groundwater.

• The result of a highly particular type of modelling which takes place almost exclusively in the limestone rock masses, as a result of the geological action of rainwater which filters underneath the surface to form groundwater.

The characteristics of granite relief forms are:

• Domes or tors and weathered granite.

• Domes or tors and boulders or rocks.

• Pavements and boulders or rocks.

• Pavements, domes or tors, crests, boulders or rocks, and weathered granite.

Are whose shape depends, largely, on the climate of the region, since it is this that determines which modelling agents will predominate

• Climate related landforms

• Litholgy and landforms

• None of the above